The transfer of a phosphate group from creatine phosphate to ADP is classified as:
A) substrate-level phosphorylation. B) first phosphorylation.
C) second phosphorylation. D) oxidative phosphorylation.
Answer: A
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In the condition diabetes mellitus, why does glucose appear in the urine?
A. Without insulin, the glomerular filtration barrier becomes extremely leaky to glucose, which is not normally filterable. B. The plasma concentration of glucose becomes so high that it diffuses from peritubular capillaries into the proximal tubule, down its concentration gradient. C. The rate of tubular secretion of glucose becomes greater than the sum of glucose filtration and reabsorption. D. The filtered load of glucose becomes greater than the tubular maximum for its reabsorption. E. Without the hormone insulin, glucose cannot enter proximal tubule epithelial cells.
Each gustatory cell extends a ________ into the surrounding fluids through a narrow taste pore.
A) taste bud B) papilla C) taste hair D) basal cell E) neuron
The pleural space is located
A) between neighboring alveoli B) between the layers of the membrane covering the lungs C) between the ribs D) in the nasal cavity
If a blood cell is immersed in a solution that causes water to move out of the cell, the solution is a/an ________ solution.
A. hypotonic B. hypertonic C. isotonic D. None of the choices are correct.